[3.9] Clarify that Set._from_iterable is not required to be a classmethod. (GH-23272)#23450

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rhettinger merged 1 commit intopython:3.9from

miss-islington:backport-68f68fa-3.9

Nov 21, 2020

Commits on Nov 21, 2020

Clarify that Set._from_iterable is not required to be a classmethod. (GH-23272)

rickeylev
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miss-islington
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